BREAKDOWN Convallaria—renders heart action more regular; feels as if heart beats through the chest; sensation of heart stopping and starting again; worse from the least exertion; tobacco heart; angina; pulse very rapid and irregular. Digitalis—pulse weak and irregular; failure of compensation; auricular flutter; result of rheumatic fever; palpitation on the least movement; feels heart will stop if he moves; stitches in the heart; mitral disease; sudden sensation as if heart stood still. Crataegus—a great heart tonic; acts on heart muscle cardiac dropsy; aortic disease; extreme weakness; dilated heart; extreme dyspnoea on least exertion; pain in region of heart and under left clavicle; angina. Calc Phos—involuntary sighing; chest painful; suffocating cough; pain over LHS. Sumbul—nervous palpitation; cardiac asthma; pain in the left breast; left arm heavy, numb and weary; pulse irregular; loses breath on exertion. Spigelia—violent palpitation; great aggravation from movement; pulse weak and irregular; angina, extending to arms—hot water relieves; whole left side sore; dyspnoea must lie on right side with head high. Kali Carb—palpitation and burning in heart region; weak, rapid pulse due to digestive disturbance; threatened heart failure; great weakness. Heart organo- to stabilise this organ. DOSAGE—6TD while cause is being found.